2. In the figure, a square is inscribed in a circle of diameter 14 cm and another square is circumscribing the circle. Find the ratio of the area of the outer square to the area of the inner square.

3. A number '

*x*' is chosen from the numbers - 3, - 2, -1, 0, 1, 2. Find the probability that

*x*2 les than equal to 4.

4. If the point (

*x*,

*y*) is equidistant from the points (a - b, a +b) and (- a - b, a + b), prove that

*x-*a = 0.

5. If the roots of the equation (a2 + b2 )

*x*2 - 2(ac + bd)

*x*+ (c2 +d2 ) = 0 are equal, then prove that a/b = c/d